Well, at least he'd go with a bang? But Dean would definitely try not to explode all over any rooms, least of all the ones inside their home. They were very old walls, they didn't deserve Winchester guts up them. Of course, Sam was the one coughing his guts up, not Dean.
Snorting in amusement, Dean pushed Sam to lie back and pet his hair back from his face. "I could tell you a bedtime story but I doubt you'd sleep after it. How about warm milk? Feetie pyjamas? Your call, hot shot."